Temporal Variation Extraction: Additional to composition extraction, time differences and temporal patterns between inputs from different senses further add up to help extract sensory experience more clearly, which I call "Temporal Variation Extraction". E.g. it is rare that honking of a car, a bird chirping and a man shouting happen at the same time. Differences in their timings, aided by composition extraction, enables VP to link different kinds of sensory data to their sources.

In the same way, when information from different senses are received by infants in aggregate form, based on composition and temporal variation extraction, they start making sense (literally) of things they interact with in the external world (the reason an infant becomes busy with toys that have flickering lights, make sound and move in synchrony is that his VP is learning characteristics of objects in the external world using temporal variation).